Using these Gremeli table lamps is super easy. Just find a nice spot in your room for them, like on a side table or a nightstand. Then, screw in the provided Led A19 9w bulb into the E26 screw terminal switch. You can turn the lamp on and off using the switch. As for maintenance, it's simple. Just use a soft, dry cloth to gently wipe the glass body and the brass-gold base to keep them looking shiny. Avoid using harsh chemicals as they might damage the finish. If the cotton shade gets dirty, you can carefully spot clean it with a mild detergent and water. Also, make sure to keep the lamps away from direct sunlight for long periods as it could fade the colors. These lamps don't need any assembly, so you can start enjoying their nautical charm right away.